| Name | CVE-2023-4949 |
| Description | An attacker with local access to a system (either through a disk or external drive) can present a modified XFS partition to grub-legacy in such a way to exploit a memory corruption in grub’s XFS file system implementation. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| grub (PTS) | buster | 0.97-75 | vulnerable |
| bullseye | 0.97-77 | vulnerable |
| bookworm | 0.97-80 | vulnerable |
| sid, trixie | 0.97-81 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| grub | source | (unstable) | (unfixed) | unimportant | | |
Notes
https://xenbits.xenproject.org/xsa/advisory-443.html
grub-legancy has not secure boot support. The CVE is specific for the src:grub
issue "An attacker with local access to a system (either through a disk or external
drive) can present a modified XFS partition to grub-legacy in such a way to exploit
a memory corruption in grub's XFS file system implementation."